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Servo Stiffness of the High Velocity Linear Motor Feed Drives

机译：高速直线电机进给驱动器的伺服刚度

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摘要

Linear feed system driven by linear motor eliminates any mid- transmitting mechanism, so that its servo stiffness along the motion direction is decisively determined by the servo controller. In this paper, the GD-Ⅲ linear induction motor feed drive system is introduced, and its feature is analyzed. According to the principle of the controller, the transfer function of the feed drives is established, while the servo dynamic stiffness of the feed drive system is investigated with simulation program MATLAB & SIMULINK. The influence of the parameters of the controller on the servo stiffness is also analyzed. The simulation shows that the positional loop proportional gain k_v and velocity proportional gain k_p and smoothing time constant T_n and the current loop proportional gain k_(pi) and the moving mass m have great influence upon the servo dynamic stiffness of the linear motor feed drive system. At the end of the paper, the experimental attachment is introduced and the simulation has been verified.
机译：由直线电动机驱动的直线进给系统消除了任何中间传动机构，因此沿运动方向的伺服刚度由伺服控制器决定性地确定。本文介绍了GD-Ⅲ型直线感应电动机进给驱动系统，并对其功能进行了分析。根据控制器的原理，建立了进给驱动器的传递函数，并利用MATLAB＆SIMULINK仿真程序研究了进给驱动器系统的伺服动态刚度。还分析了控制器参数对伺服刚度的影响。仿真表明，位置环比例增益k_v和速度比例增益k_p以及平滑时间常数T_n和电流环比例增益k_（pi）和运动质量m对直线电机进给驱动系统的伺服动态刚度有很大影响。最后，介绍了实验附件并验证了仿真结果。

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